Generally speaking, early low-grade malignant tumors usually do not recur and metastasize, but may recur and metastasize if they are not treated in time and develop into later stages. Low-grade malignant tumors refer to malignant tumors with lower degree of malignancy, whose main clinical features are less tumor cell heterogeneity, slower tumor lesion progression, less invasive to surrounding tissues, less prone to lymph node metastasis at early stage, and later blood circulation metastasis. Some tumor cells almost do not have metastasis to distant organs, which is usually called lazy cancer in clinical practice. For very early low-grade malignant tumors, it is possible that they can be removed only by surgery. For very early low-grade malignant tumors, it is possible to remove the tumor only through surgery. The prognosis of patients with low-grade malignant tumors through early surgical resection is good, and some patients’ tumors can even be completely cured without recurrence and metastasis. However, if patients with low-grade malignant tumors do not receive timely treatment, the low-grade malignant tumors will develop into advanced stages and may recur and metastasize. If the patient is treated early, it is possible to delay recurrence and prevent metastasis. Malignant tumors need to depend on the degree of differentiation and the activity of the tumor, if the low-grade malignant case, the chances of recurrence and metastasis are relatively small.